3-31
Performance Tests
Multiple PDH Transmitter Outputs (Options UHC, [US6])
71. Adjust the oscilloscope timebase, delay and vertical sensitivity controls to verify
that the pulse meets the mask as shown in Figure 3-18. Use the displayed settings as
a guide.
72. Measure the peak pulse amplitude at mid-pulse-width using the Oscilloscope and
verify that this is between 0.900V and 1.100V.
73. Repeat steps 71 and 72 with the Oscilloscope Channel 1 connected to SIGNAL
OUT 2 and SIGNAL OUT 3 in turn.
34.368 Mb/s Additional Outputs Delay
74. Connect the PDH SIGNAL OUT 1 port to the Oscilloscope Channel 1. Set the
Oscilloscope termination to 1MΩ.
75. Connect the PDH SIGNAL OUT 2 port to the Oscilloscope Channel 2. Set the
Oscilloscope termination to 1MΩ.
76. Set the Transmitter Output PATTERN to USER WORD 1111111110001000 and
check that the pulse on Channel 2 is 4 bits delayed with respect to the pulse on
Channel 1.
77. Disconnect the SIGNAL OUT 2 port from the oscilloscope and connect the
SIGNAL OUT 3 port to the oscilloscope Channel 2.
78. Check that the pulse on Channel 2 is 8 bits delayed with respect to the pulse on
Channel 1.
79. Disconnect the SIGNAL OUT 3 port from the oscilloscope and connect the
SIGNAL OUT 4 port to the oscilloscope Channel 2.
80. Check that the pulse on Channel 2 is 12 bits delayed with respect to the pulse on
Channel 1.
81. Ensure that the ratio of +ve and -ve pulse amplitudes is between 0.95 and 1.05.
82. Ensure that the ratio of +ve and -ve pulse widths is between 0.95 and 1.05.
139.264 Mb/s Output Pulse
83. Connect the PDH SIGNAL OUT 2 port to the Oscilloscope Channel 1.
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